diff --git a/packages/huma-shared/src/utils/number.ts b/packages/huma-shared/src/utils/number.ts
index e935a77a..0921c47a 100644
--- a/packages/huma-shared/src/utils/number.ts
+++ b/packages/huma-shared/src/utils/number.ts
@@ -38,6 +38,8 @@ export const formatMoneyFixed = (
     return num
   }
 
+  toFixed = Number(num) === 0 ? 0 : toFixed
+
   const numCast = Number(num)
   const moneyFormatter = new Intl.NumberFormat('en-US', {
     style: 'currency',
@@ -77,6 +79,8 @@ export const formatNumberFixed = (
     return num
   }
 
+  toFixed = Number(num) === 0 ? 0 : toFixed
+
   const numberFormatter = new Intl.NumberFormat('en-US', {
     maximumFractionDigits: toFixed,
     minimumFractionDigits: toFixed,